Textile fabrics and their preparation for dyeing : with numerous engravings and diagrams (1906)
Hummel, J. J. (John James), -1902, Hasluck, Paul N. (Paul Nooncree), 1854-1931, Foster, A. R · Philadelphia : David McKay · leaf 138
S. 134 during cleansing operations. Each reservoir should hold at least a day's supply. Purification of Water with Caustic Soda.— For pur- poses of scouring, or where a slightly alkaline water is not prejudicial, caustic soda may be conveniently substituted for quicklime, since its solution can so… … sodium carbonate remains in the corrected water as if the purifying agent used had been soap. It is well to heat the mixture to 50° C. in order to cause more rapid settling of the precipitate. Mechanical impurities, also iron, aluminum, and earthy phosphates are completely thrown down. Permanent as…
Dyes and dyeing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
